Operation CHARM: Car repair manuals for everyone.
Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

(Some people have issue connecting. LEMON is investigating. For now, use Firefox or change your DNS server)

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Hardware Attachement Thread Locking

HARDWARE ATTACHMENT THREAD LOCKING

All door hardware production attaching screws contain an epoxy thread-locking compound to insure that the minimum original torque setting will be maintained. Service attaching screws may not contain a thread-locking compound. To prevent loosening of service screws or to renew thread-locking characteristics of production screws, the threads of the fastener(s) can be treated with GM Part 1052279, Loctite 75 or equivalent which is a two-part material applied to the hardware attachment as a liquid. Upon installation and tightening, the adhesive cures to bond the attachment and prevent loosening or backing out. The adhesive bond does not prevent future removal. Loctite 75 or equivalent can be used on any threaded fastener.